Sound-damper.



B. RENZ.

SOUND DAMPER. APP'LloA'HoN FILED 0012,23, 190s.

Ptend' Mar.' 9, 1909.

fur Norms 'zum ca., asuma-on n z;

animan BENZ, or ERLANGEN, GERMANY,

ASSIGNOR TO REINIGER, GEBBERT d; SCHALL AKTIENGESELLSCHFT, Olw ERLANGEN, GERMANY.

SOU`ND-DAMPER.

Specification of Lette-rs Patent.

Patented. March 9, 1909.

Application filed October 28. 19GB. Serial No. 459,166.

To all whom fit may concern:

Be it known that l, EDMUND BENZ, a sub-- j ect o'l the Emperor ot Germany, residing at 7 Marquardsenstri sse, Erlangen, Bavaria, Germany, have invented certain new and useful lmpiovenients in Sound-Dampers, of which the following is a specification.

.T his invention relates to a sound damper for deadening sounds in liquids which origi- 10 nate in small spaces situated in the liquid.

The new device can be employed for several purposes, for example tor reducing the sound resulting lrom the introduction ot steam under pressure into liquids.

The sound damper appears to be also suitable for use in discharging sea mines so as to prevent the detonation being noticed b v the enemy.

The sound damper is particularly suitable 'for deadening the sounds that are caused in the like, and which sounds have considerable disturbing eil'ect tor example when invalide are treated by means of the Rntgen rays.

ln the dra "ing various forms of the new .sound damper in conil'iiiation with a circuit breaker are illustrated.

Figure l is a longitudinal section ol one olY these forms, Fig. 2 a plan according to Eig. l

the anode ot the circuit breakerl being removed, Fig. 3 is a longitudinal section ol a inodiiied form. Fig. e a plan according to Fig. 3 the anode of the circuit breaker being removed, Fig. 5 is another iiorm of the modiiication according to Figs. l and 2 in longitudinal section, Fig. (i is a plan according to Fig. 5 the anode or the circuit breaker being removed.

ln the iporm illustrated in Figc. l and cuit breakers, a sound deadening cushion is formed by a hose pipe c made ol 'l'lexible material india rubber for example, which is stretched on the inside of a bulging hollenv body l) consisting of porcelain or other suitable material and shuts oli` a space c Which can be lled With air or With saw dust or other suitable sound deadening material.

The anode e oi' the circuit breaker is arranged in the support ring d orn the casing l) in such a manner that the platinum pin f situated on the anode extends into the pipe a. The outer edges of the pipe a are laid around exmay also be adopted which Vis specially suitable Afor Vvehnelt cirtensions g of the pipe and are attached theret-o by rings la Figs. 3 and +L shov.' the sound damper in combination with a Simon circuit breaker the anode fi ot which is arranged so that its opening Where the. breaking of the circuit is eiflected, lies on a lev livith the upper opening ot the pipe a.

The action or the above described soun( damper is 'liollovfsz The sound Waves produced by the vibrations that arise in the platinumpinf or at the opening lf ci the circuit breaker vvlien the circuit is broken strike against the resilient sides c and are damped or taken up by the air pad or the cushion formed of saw dust or the like situated be hind the sides.

ln the forni of the invention shown in liigs. 5 and 6 the hollow body l) is i'uriiished with a l junction piece l into which a pipe m opens using circuit breakers acting electrolytically or mechanically tor Working inductors and that runs into the open air. lt in the Working of the circuit breaker the air in the chamber c becomes heated, the excess oi air can escape through thc pipe m and a narrowing ot the space between the resilient sides ci and the current breaker/is prevented so that the gas bubbles generated on the latter can ascend Without hindrance. This arrangement is advantageous because in consequence ol' the bulging of th resilient sides (L the ascent oin the gas bubbles which forni when the circuit is broken may be delayed and the regular succession oi current iiiteiii.ptioiis be suspended whereby paiticrlarlyF when the circuit br aker is employed for the Working ot inductors Vtor lilntgen apparatus a fluttering ot the lontgen tubes may --rise T his disadvantage is ob'v'iated the arrangement shown iii Figs. 5 and (i. This arrangement ii the iiorin ol' the invention shown in Figs. and l.

What l claim and desire to se by lietters Patent is l. ln a sound damper, the combination of a hollow body with a flexible diaphragm forming a sound deadening space between the body and the diaphragm.

ln a sound damper, the combination with a tubular body made ol insulating niaterial and Aformed with a bulged center, a Vflexible member, and means l'or holding the flexible member under tension cn the inside ol and separated viioin the tubular body so as to torni an air space therebetween.

3. 'In a sound damper, the combination i with a tubular body having a bulged center, a pipe inade of flexible material stretched over the inside of the tubular body, said pipe forming with the tubular body an air space, and means for ixing the anode of an electrolytic circuit breaker on the hollow body,

the place where the breaking is effected being i adjacent the air space.

4. In a sound damper, the combination of a tubular body made of insulating material and formed with a bulged center, a pipe made of flexible material stretched over the l l l inside of the bulged center", ii'leans for' arl-'anging the anode of an electrolytic circuit breaker on the hollow body, a junction arranged on ,v 

